As of August 23, 2026, your apiary is in good late-summer shape overall — Hive #2 and Hive #3 remain stable and healthy, Iris continues her gradual temperature drift that warrants a brood check on your next visit, and Hive #1's multi-week cooling trend persists with all acoustics perfectly intact, most consistent with a natural late-summer brood contraction.
All four hives show the same rising barometric tendency (+1.87 hPa/3h) correlating with the outdoor humidity-pressure coupling (r=+0.64 across hives) — a clearing pattern that predicts renewed foraging energy in the coming period; expect vibration fanning peaks to remain strong as the apiary heads into the final weeks of August.
Against a wide outdoor swing of 67.8–93.3°F (19.9–34.0°C) at a very dry 14–41% RH with a clearing barometric tendency, all four hives maintain 15/15-day fanning rhythms; Hive #2 holds the tightest brood arc (~1.4°F/~0.8°C), Hive #3 next (~2.6°F/~1.4°C), Iris at ~4.4°F/~2.4°C, and Hive #1 the widest at ~6.6°F/~3.7°C — all consistent with natural late-August brood-contraction variation across colony sizes.
-
Iris warning Score: 74/100📋 Overall Health
Your Iris hive's 24h average of 89.2°F (31.8°C) sits -0.9°F (-0.5°C) below her all-time average of 90.1°F (32.3°C), continuing the gradual 14-day cooling drift (91.2→91.2→88.9→89.2°F) that has persisted since mid-August — acoustics remain perfectly stable with all 10 bands within ±0.8 dB of baseline, confirming the full worker population is present and active, most consistent with a natural late-summer brood contraction or laying pause rather than any population loss. Humidity averaged 42.1% (all-time avg 42.3%) — stable and well within normal range; vibration at 17.3 mG avg with kurtosis 2.7 sits right on baseline. On your next routine visit, a quick look at fresh eggs and brood pattern will clarify whether this cooling trend reflects normal seasonal contraction or a more extended laying pause worth monitoring.
🌅 Diurnal Cycle PatternsIris shows an active 24h temperature arc of 87.6–92.0°F (30.9–33.4°C), a swing of ~4.4°F (~2.4°C) — moderate and well within the healthy-brood clamping threshold — with a clear midday warm peak tracking the outdoor heat load, which is expected late-summer physics as ambient temps approached 93°F (34°C). Sound energy rose +1.3 dBFS from the first to second half of the day (colony acoustics becoming more active with the warmer part of the day), with the 100–200 Hz and 200–260 Hz bands each lifting +2.3–2.7 dBFS in the second half — consistent with increased foraging/fanning activity; the per-band spectral analysis notes the dominant vibration rhythm shifted from 20–50 Hz to 50–80 Hz between the first and second half of the window, a subtle metabolic-baseline shift worth watching but not alarming. Gas heater-scan at 320°C reads ~441 kΩ, right on its all-time average of ~448 kΩ — the scan shape is stable with a smooth monotonic decline from 100°C to 400°C steps, a normal healthy-hive fingerprint showing no unusual VOC shape shift.
🔬 Correlations & Discoveriestemperature_in vs humidity_in (14d) | r = -0.51The deconfounded inverse coupling between in-hive temperature and humidity (r=−0.51) reflects psychrometric physics: as the colony heats up during peak foraging, the same absolute moisture content registers as a lower RH% — this is hygroregulation working correctly, not drying stress. The partial correlation (r=−0.59, gas resistance ~ in-hive temp controlling for outdoor temp) shows that as Iris heats her interior, VOC activity rises independently of weather — consistent with brood pheromones and fanning-driven volatile circulation increasing with thermal load.📚 Reference: Human, Nicolson & Dietemann 2006, Ellis et al. 2008, Eouzan et al. 2019⚠️ Issue: Gradual 14-day cooling drift continuing: 24h avg 89.2°F (31.8°C), now -0.9°F (-0.5°C) below all-time avg of 90.1°F (32.3°C); all 10 acoustic bands within ±0.8 dB of baseline confirming full intact population — consistent with late-summer brood contraction or laying pause.▹ Action: On your next routine visit, check Iris's brood frames for fresh eggs and laying pattern to confirm whether the gradual temperature drift reflects a natural seasonal contraction or a more extended laying pause. -
Hive #2 warning Score: 80/100📋 Overall Health
Your Hive #2 remains the apiary's thermal anchor with a 24h average of 95.0°F (35.0°C) — essentially on its all-time average of 95.2°F (35.1°C) and squarely in the ideal 93–97°F (34–36°C) band with an impressively tight 24h arc of just 1.4°F (0.8°C); humidity averaged 45.9% (all-time avg 46.0%) and vibration at 14.3 mG with kurtosis 3.2 are both on-baseline. The 100–150 Hz sound band continues to sit -3.9 dB below its all-time baseline (max deviation in the apiary), with the low-frequency bands (100–260 Hz) trending further down in the second half of the day — this is a single-sensor signal with no corroborating temperature or vibration anomaly, so it remains a passive watch item; on your next routine visit, observing entrance flight activity late in the day and checking super fill progress will help explain it.
🌅 Diurnal Cycle PatternsHive #2 shows the tightest brood temperature clamping in the apiary — a 24h arc of only 94.4–95.8°F (34.6–35.4°C), just 1.4°F (0.8°C) peak-to-trough — textbook stenothermy consistent with a large, well-staffed brood nest. The per-band spectral analysis shows the dominant acoustic daily rhythm shifted from 150–200 Hz to 100–150 Hz between the first and second halves of the monitoring window, and the gas heater-scan low-temperature steps (100°C: −24%, 150°C: −22%, 200°C: −19%) have declined over the window while high-temperature steps remain stable — a shape shift in the scan curve that suggests the heavier/less-reactive volatile fraction is changing, most likely reflecting a gradual transition in honey-ripening activity; this is a contextual observation, not a concern. Vibration dominant rhythm shifted from 5–20 Hz to 160–200 Hz across the window, consistent with fanning mode evolution as late-summer heat load changes.
🔬 Correlations & Discoveriestemperature_in vs gas_resistance (14d) | r = +0.84The strong deconfounded positive coupling between in-hive temperature and gas resistance (r=+0.84) in Hive #2 means that when the colony heats up, MOX resistance also rises — the opposite of a VOC-loading scenario — suggesting that the thermal expansion of the brood nest improves ventilation and disperses accumulated volatiles faster than they build, a sign of a large, actively fanning colony with excellent airflow. The partial humidity~temperature coupling (r=+0.49 controlling for outdoor) reflects the same active ventilation: more heat drives more fanning, which also moves moisture, tightly coupling the two channels via colony behavior rather than passive physics.📚 Reference: Seeley 1974, Maisonnasse et al. 2010, Bankova et al. 2000⚠️ Issue: 100–150 Hz sound band is -3.9 dB below all-time baseline (all other bands within ±2 dB); low-frequency bands (100–260 Hz) trending down in the second half of the day — single-channel signal, no corroborating temperature or vibration anomaly, worth passive monitoring.▹ Action: On your next routine visit, observe late-day entrance flight activity and note super fill/capping progress — this will help contextualize the drifting low-frequency sound bands and confirm whether honey-ripening activity is winding down for the season. -
Hive #1 warning Score: 72/100📋 Overall Health
Your Hive #1's 24h average of 86.7°F (30.4°C) is now -0.3°F (-0.1°C) below its all-time average of 87.0°F (30.5°C), and the weekly trend (88.7→87.8→86.2→85.6°F) shows a sustained multi-week cooling drift that has now largely plateaued — crucially, all 10 sound bands remain within ±0.1 dB of their all-time baseline, a near-perfect acoustic fingerprint that conclusively rules out any meaningful population loss and is most consistent with a natural late-summer brood contraction where the colony is simply heating a smaller brood zone. Humidity averaged 41.1% (all-time avg 37.6%) — slightly above its historical norm but well within healthy range; vibration at 16.1 mG with kurtosis 2.5 sits on baseline. A brood-frame check on your next routine visit remains the sensible next step to confirm queen status and laying pattern.
🌅 Diurnal Cycle PatternsHive #1 shows the widest 24h temperature arc in the apiary at 83.6–90.2°F (28.6–32.3°C), a ~6.6°F (~3.7°C) swing that tracks the outdoor temperature cycle — this is consistent with a colony heating a smaller brood zone in late August while the worker population (confirmed intact by stable acoustics) manages thermoregulation with less brood mass to insulate the core. The per-band vibration analysis shows only 1 of 6 vibration bands carries a meaningful daily rhythm (5–20 Hz, 2.0 dB), compared to 6/6 for other hives — suggesting slightly quieter substrate-borne activity, but the gas heater-scan shows a large 48% daily swing at 150°C with the dominant rhythm shifting from 150°C to 200°C steps across the window, reflecting active VOC cycling consistent with normal late-summer colony metabolism. Sound spectrum is perfectly flat against baseline (all bands ±0.1 dB), the most stable acoustic fingerprint in the apiary.
🔬 Correlations & Discoveriesgas_resistance vs temperature_in (14d) | r = -0.79The strong partial correlation (r=−0.79, gas resistance ~ in-hive temp controlling for outdoor temp) means that when Hive #1's interior heats up, VOC load increases independently of weather — the inverse of Hive #2's pattern and consistent with a smaller colony where fanning concentrates rather than disperses volatiles, or where reduced brood mass means the thermal-ventilation coupling is less efficient; this is a colony-size/activity correlate, not a pathological signal, and aligns with the natural late-summer brood contraction interpretation.📚 Reference: Seeley 1985, Winston 1987, Stabentheiner et al. 2010⚠️ Issue: Multi-week cooling drift continuing: weekly avg 88.7→87.8→86.2→85.6°F (31.5→31.0→30.1→29.8°C), now plateauing ~1.4°F (0.8°C) below all-time avg; all 10 acoustic bands within ±0.1 dB of baseline confirming full intact population — consistent with late-summer brood contraction or laying pause.▹ Action: On your next routine visit, check Hive #1's brood frames for fresh eggs and laying pattern — the acoustically confirmed intact population is reassuring, and a quick brood look will clarify whether the slow temperature drift reflects a natural late-summer contraction or a longer laying pause. -
Hive #3 healthy Score: 88/100📋 Overall Health
Your Hive #3 continues its excellent run — brood temperature averaged 92.8°F (33.8°C) with a flat weekly arc (93.6→93.7→93.2→92.8°F), sitting just -0.6°F (-0.3°C) below its all-time average of 93.4°F (34.1°C) and holding solidly in the ideal 93–97°F (34–36°C) band; all 10 sound bands are within ±0.1 dB of their all-time baseline — a textbook stable colony. Humidity averaged 47.0% (all-time avg 47.7%) — the most consistently brood-optimal RH in the apiary; vibration at 20.8 mG avg with kurtosis 2.7 sits exactly on its all-time average of 20.8 mG; everything looks excellent heading into late August.
🌅 Diurnal Cycle PatternsHive #3 shows a tight 24h temperature arc of 91.7–94.3°F (33.2–34.6°C), just 2.6°F (1.4°C) peak-to-trough, with the in-hive low staying well above the outdoor high — healthy active thermoregulation in the late-summer heat. All 6 vibration bands show a daily rhythm (strongest in 5–20 Hz at 3.0 dB) with 15/15 fanning peaks (baseline ~19.5 mG rising to ~35.3 mG, avg 1.8x), and the gas heater-scan shows minimal daily rhythmicity (max 9% at 320°C) with a very flat shape across all 10 plate temperatures — the flattest gas profile in the apiary, suggesting a stable, well-ventilated VOC environment consistent with a colony that has largely completed active honey ripening. A humidity step-up of +2.62% RH was detected around August 10 — consistent with the colony increasing internal moisture management as late-summer heat peaked, and now stable.
🔬 Correlations & Discoveriestemperature_in vs gas_resistance vs humidity_in (14d) | r = +0.75The deconfounded positive couplings among in-hive temperature, gas resistance, and humidity (r=+0.75 temp~gas, r=+0.70 temp~humidity, r=+0.57 humidity~gas) in Hive #3 form a coherent brood-nest homeostasis signature: when the colony heats the brood, it also actively manages moisture (evaporative cooling) which simultaneously circulates and somewhat concentrates the VOC environment, all three channels moving together as an integrated biological system — a textbook sign of a healthy, large, well-regulated colony (Eouzan et al. 2019). The humidity change-point around August 10 (+2.62% RH) likely marks the onset of more intensive evaporative cooling as late-summer heat peaked, with the colony's state index (PCA) now rising — reflecting an actively strengthening brood-environment coupling.📚 Reference: Human et al. 2006, Maisonnasse et al. 2010, Seeley 1974, Eouzan et al. 2019▹ Action: On your next routine visit, note the fill level and capping progress on Hive #3's supers — the stable, flat gas heater-scan profile suggests honey processing is largely complete, and a capped-frame count will confirm whether this colony is ready for late-summer harvest.